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PMID: 26238514 Published · ppublish English Journal Article Research Support, Non-U.S. Gov't

Mutations in ARID2 are associated with intellectual disabilities.

Neurogenetics ·Vol. 16 ·No. 4 ·2015-10-00 ·Pages 307-14

Shang L, Cho MT, Retterer K, Folk L, Humberson J, Rohena L, Sidhu A, Saliganan S, Iglesias A, Vitazka P, Juusola J, O'Donnell-Luria AH, Shen Y, Chung WK

Abstract

The etiology of intellectual disabilities (ID) remains unknown for the majority of patients. Due to reduced reproductive fitness in many individuals with ID, de novo mutations account for a significant portion of severe ID. The ATP-dependent SWI/SNF chromatin modifier has been linked with neurodevelopmental disorders including ID and autism. ARID2 is an intrinsic component of polybromo-associated BAF (PBAF), the SWI/SNF subcomplex. In this study, we used clinical whole exome sequencing (WES) in proband-parent-trios to identify the etiology of ID. We identified four independent, novel, loss of function variants in ARID2 gene in four patients, three of which were confirmed to be de novo. The patients all have ID and share other clinical characteristics including attention deficit hyperactivity disorder, short stature, dysmorphic facial features, and Wormian bones. All four novel variants are predicted to lead to a premature termination with the loss of the two conservative zinc finger motifs. This is the first report of mutations in ARID2 associated with developmental delay and ID.

Keywords
ARID2 De novo mutations Intellectual disabilities SWI/SNF chromatin modifier Whole exome sequencing
MeSH Terms
Adolescent Child Developmental Disabilities/genetics Exome Female Humans Intellectual Disability/genetics Male Mutation Transcription Factors/genetics
Chemicals
ARID2 protein, human Transcription Factors
Authors & Affiliations
14 authors, click to expand affiliations / ORCID
Shang Linshan
Department of Pediatrics, Columbia University Medical Center, 1150 St. Nicholas Avenue, New York, NY, 10032, USA.
Cho Megan T
GeneDx, Gaithersburg, MD, USA.
Retterer Kyle
GeneDx, Gaithersburg, MD, USA.
Folk Leandra
GeneDx, Gaithersburg, MD, USA.
Humberson Jennifer
Department of Pediatrics, Division of Genetics and Metabolism, University of Virginia, Charlottesville, VA, USA.
Rohena Luis
Department of Pediatrics, Division of Genetics, San Antonio Military Medical Center, San Antonio, TX, USA.
Sidhu Alpa
Department of Pediatrics and Human Development, Michigan State University, East Lansing, MI, USA.
Saliganan Sheila
Department of Pediatrics and Human Development, Michigan State University, East Lansing, MI, USA.
Iglesias Alejandro
Department of Pediatrics, Columbia University Medical Center, 1150 St. Nicholas Avenue, New York, NY, 10032, USA.
Vitazka Patrik
GeneDx, Gaithersburg, MD, USA.
Juusola Jane
GeneDx, Gaithersburg, MD, USA.
O'Donnell-Luria Anne H
Analytical and Translational Genetics Unit, Massachusetts General Hospital, Boston, MA, USA. | Broad Institute of MIT and Harvard, Cambridge, MA, USA. | Division of Genetics and Genomics, Boston Children's Hospital, Boston, MA, USA.
Shen Yufeng
Department of System Biology and Biomedical Informatics, Columbia University Medical Center, New York, NY, 10032, USA.
Chung Wendy K
Department of Pediatrics, Columbia University Medical Center, 1150 St. Nicholas Avenue, New York, NY, 10032, USA. wkc15@columbia.edu. | Department of Medicine, Columbia University Medical Center, New York, NY, USA. wkc15@columbia.edu.
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Article Info
Journal
Neurogenetics
Abbr.
Neurogenetics
ISSN
1364-6753
Published
2015-10-00
Epub
2015-00-04
Pages
307-14
Language
English
Region
United States
NLM ID
9709714
Subset
IM
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